Answer:
The pair of equations are equivalent.
Explanation:
Given the pair of equations
[tex]\begin{gathered} -3\mleft(2x+9\mright)=12 \\ 2x+9=-4 \end{gathered}[/tex]If we take the first equation
[tex]-3\mleft(2x+9\mright)=12[/tex]Divide both sides by -3.
[tex]\begin{gathered} -\frac{3\mleft(2x+9\mright)}{-3}=\frac{12}{-3} \\ 2x+9=-4 \end{gathered}[/tex]The result is the second equation.
Therefore, the pair of equations are equivalent.